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Journal of the Korea Concrete Institute

J Korea Inst. Struct. Maint. Insp.
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  • Korea Citation Index (KCI)

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Title An Application of LTR Method in a DUOX System to Control a MDOF Structure Subjected to the Seismic Excitations
Authors 이진호
Page pp.65-73
ISSN 1226-6205
Keywords DUOX 시스템 ; 지진공학 ; LTR ; 최적제어 DUOX system ; Earthquake engineering ; LTR ; Optimal control methods
Abstract Retaining large stability margin is essential in designing a feedback control system to deal with the uncertainties inherently existing in the mathematical model and the control apparatus. The LQG controller in general loses the stability margin due to the embed Kalman filter. The performance of a control system called LTR with a DUOX structure(LTR/DOUX) to overcome the demerit of LQG controller is to be investigated from the responses in both the time and the frequency domain. The results indicated that the LTR/DOUX recovered the gain margin of 30dB approximately 20 times more than that of LQG/DOUX, resulting in a robust stable control system.